Untuk set real IP saya pake code ini, paste ke nginx.conf
Semoga membantu..
coba cek history error.log atau access.log.
Saran tuan diatas juga boleh dicoba, ganti
listen = 127.0.0.1:90xx
ke
listen = /var/run/php5-fpm.sock
restart service nginx dan php-fpm
Code:
set_real_ip_from 199.27.128.0/21;
set_real_ip_from 173.245.48.0/20;
set_real_ip_from 103.21.244.0/22;
set_real_ip_from 103.22.200.0/22;
set_real_ip_from 103.31.4.0/22;
set_real_ip_from 141.101.64.0/18;
set_real_ip_from 108.162.192.0/18;
set_real_ip_from 190.93.240.0/20;
set_real_ip_from 188.114.96.0/20;
set_real_ip_from 197.234.240.0/22;
set_real_ip_from 198.41.128.0/17;
set_real_ip_from 162.158.0.0/15;
set_real_ip_from 104.16.0.0/12;
set_real_ip_from 172.64.0.0/13;
real_ip_header CF-Connecting-IP;
Semoga membantu..

coba cek history error.log atau access.log.
Saran tuan diatas juga boleh dicoba, ganti
listen = 127.0.0.1:90xx
ke
listen = /var/run/php5-fpm.sock
restart service nginx dan php-fpm